![]() What is the SHA-1 of the ISO you use (you can compute the SHA-1 by clicking the (✓) button. I want the exact error.Īlso when exactly does that error occur? At what stage of the boot or of the installation process?Īlso, and this is probably the most important, are you using an official Microsoft ISO? ![]() "Bad disk, replace it" is an approximation of the error message you got. So can you please provide a few more details about your "error like unit is unformatted"? You will understand that vague error messages are not going to get people to go out of their way to help you out (especially as you chose to ignore the checklist and failed to provide a log, which may provide some clues).įor instance, are you aware that you may get messages from the Windows installer that may be similar to the one you got if you have multiple disks plugged in? When installing Windows, you should really make sure that you only have the target drive plugged in, and, if prompted, tell Windows that it should erase the disk. Unlike UEFI, BIOS is file system agnostic, which means that it's the USB drive that provides the file system driver (or it's early boot equivalent), and it would really take something extraordinary to prevent NTFS from working where FAT32 works, considering that the early driver comes from Microsoft and has been refined over 2 decades.Īnd indeed, now you indicate that NTFS did boot, but that you got another error. You may also want to read the following entry from the FAQ: You may also have to change the Partition scheme. Selecting "BIOS" when you are trying to boot in UEFI mode will produce exactly the kind of issue you think you are seeing. Otherwise, if you have a BIOS based computer or you have UEFI-CSM enabled, I can absolutely guarantee that using NTFS is not an issue.īecause you selected BIOS for Target system in Rufus instead of UEFI, that's why.Īgain, you MUST select the Target system that matches the type of computer you want to boot. The only ever possibility for your laptop not to boot an USB Flash Drive unless it's formatted with FAT32 is if it's UEFI based and you are booting in pure UEFI mode (rather than UEFI-CSM). Is your laptop BIOS or UEFI based? You MUST absolutely know this beforehand, and then use the proper settings in Rufus. ![]() Hi, I have an old laptop which supports boot from USB only if it is formatted on FAT32
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